Something
public text v1 · immutable$ history
1 history
$ a
bash: a: command not found
$ b
bash: b: command not found
$ a
bash: a: command not found
$ history
1 history
2 a
3 b
4 a
5 history
$ a
bash: a: command not found
$ a
bash: a: command not found
$ a
bash: a: command not found
$ history
1 history
2 a
3 b
4 a
5 history
6 a
7 a
8 a
9 history